Noise pollution in Delhi witnessed an upward trend this Diwali compared with other metros like Chennai, Bangalore, Mumbai, and Kolkata.

However, air pollution was found to be on the lower side this year vis-à-vis previous year’s Diwali, according to the Central Pollution Control Board (CPCB) noise and air pollution data released on Monday.

According to the Delhi Pollution Control Committee, the city recorded the lowest air pollution level figures this Diwali in the past five years.

The CPCB’s real time continuous ambient noise monitoring at five locations — Netaji Subhas Institute of Technology (NSIT), CPCB, Delhi College of Engineering (DCE), Dilshad Garden recorded an average of 58 dB(A), 62 dB(A), 52 dB(A) and 56 dB(A), respectively this year.

However, last year, the same locations recorded an average value of 56 dB(A), 58 dB(A), 50 dB(A), and 49 dB(A), respectively.

The findings of the committee attributed the rise in noise level to the bursting of noisy crackers t, said scientist A.K. Sinha.